Door fastener



F. T. ROBINSON.

DOOR FASTENER.

APPLICATION FILED MAR. 15, 1921.

Patented Sept. 19, 1922.

Patented Sept. 19, 1922.

v UNITED sTATE PATENT owe FRANK r. ROBINSON, or LOUISVILLE, amnion, Assionon or ONE-HALF ro 'OASCA T. HOWL'AND, or PETERSBURG, VIRGINIA.

noofe rAsTEnERi Application filed March 15, 1921. Serial No. 452,539.

To all whom it may concern: A

I Be it known that I, FRANK Tj Ronmson, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in; Door Fasteners, of which the following is a specification.

This invention relates to improvements in door fasteners, the main feature of the invention beingthe provision of a locking member adapted to be introduced between the edge of the door and the door casing and having parts for interlocking with the door and casing to prevent the opening of the door until such time as the fastening device is released. I

A further feature'of the invention is the provision of means for,adjustably'con necting a locking bolt with the frame of the fastener so that doors of varying thickness may be accommodated. w

A further feature 'of the invention i s in so constructing the parts of the fastening device that they may be readily assembled and secured togetherin compact formation when not in use. V g

Other objects and advantages will be hereinafter more fully set forth and pointed out in the accompanying specification.

In the accompanyingdrawings, which are 7 made a part of this application,

Figure 1 is a detail sectional view through a door and its casing showing thefastening mechanism applied to use for securing the door in closed position, I I H v V Figure2 is a side elevation of the fastening mechanism. removed fromthedoor,

Figure 3 is an end elevation thereof, Figure 4 is a side elevation showing the position of the parts assembled relation, as when the fastening means is not in use,

Figure 5,.is an edge elevation of the'parts shown in Figure 4, and

Figure 6 is an end elevation thereof. Referring to the drawings which similar reference numerals designate corresponding parts throughout theseveral views, 1 indicates a door of any approved construction and 2 the casing or jamb therefor, said cas ing carrying a latch plate 3 through which is formed a slot 4 for the reception of the usual form of 1001 bolt,

ln, order to securely lockthe doorin closed position and render it impossible for the door to be opened from the outsideof the room a flat plate. orbody portion 5V or a fastening memberis introduced between the edge of the door and the face of the, casing priorto closing the door, said plate havin a laterally extending tongue 6 preferably integiial therewith and struck therefrom, the struck-out portion ofthe metal being bent at right angles to the face of the plate and if desired one edge 7 of the tongue may bedisposed at an angle so that when the tongueris introduced through the slot 4; the edge 7 will overhang the faceofthe latch plate thereby aiding in retainingthe plate in engagement with the latch plate until such timeas the door is closed.

After the door is closed itv is loc ked. in closed position. byv means of a bolt 8 which is threaded through a nut 9, said nutbeing entered between the arms of a bracket or cliplO, andby extending the clip over one edge of the nut andover the opposite faces thereof, the nut will beheld against rotation on the bolt whei1, the bracket is connected with the plate 5 and the bolt 8 rotated. The bracket 10 is held in position on the bolt S by passing the bolt through the Side arms of the bracket the inner, ends-of said arifns having lateral extensions 11 which pass through slots 12 in the plate 5, and by providing a plurality of the slots 12 the bracket may be adjusted lengthwise of the plate so that the fastening means may be used in connection with doorsof varying thicknesses. Theouter end of th e plate 5 is preferably provided with a laterallyextending wing 13 so, that it may be readily grasped for holding the plate in engagement withthe latch plate until such time as the door be closed n In applying the fastening device to use the tongue 6 is first entered through the slot i in the latch plate 3 and the door then swung to closed position after which the extensions 11 of the bracket 10 are introduced through a pair of the. slots 12, the positioning of the bracket depending upon the thickness of the door. The bolt 8 is then rotated by imparting rotating action to the milled-head 14c at the outer end of the bolt, such rotating action being continued until m efl the clamping member 15 at the inner end of the bolt is forced against the face of the door 1, and as the tongue 6 is interlocked with the latch plate 3, so as to hold the plate against longitudinal movement, the door will be held in closed position until such time as the bolt is turned in the opposite direction for releasing the same from the door.

When the fastening mechanism is not in use the bolt 8, together with the bracket carried thereby, is placed on the opposite side of the plate 5 from the position the bolt occupies when in looking position'and the extensions 11 engaged with a pair of the slots 12, and byturning the bolt 8 the clamping member is forced against the edge of the tongue 6, the bolt being securely held in engagement with the plate 5, and as the bolt rests between the tongue 6 and wing 13 the fastening device will occupy but a min imum amount of space.

In applying the device to use the door 1 is swung to open position, or until it is cleared of the casing 2 and the plate 5 then placed over the latch plate 3 and the tongue entered through theslot i of the latch plate. The door is then again swung to closed position and the extensions 11 engaged with a pair of the slots 12 of the plate 5 and when the bolt is rotated in one direction the clamping member 15 is securely locked against the face of the door. As access cannot be had to any of the parts of the fastening device from the exterior of the door 1 it will be impossible to open' the door without forcibly tearing the latch plate 3 from its fastening, consequently the door will be held securely locked until such time as the bolt 8 is operated to release the fastening member. All of the parts of this device are made of metal, and in view of their simplicity the device can be very cheaply manufactured and will be indestructible from use, and in view of the manner in which the parts may be assembled, when not in locking position, the device will occupy but a minimum amount of space and can be carried in a pocket conveniently,

or in a grip or other receptacle.

Having thus fully describedmy said inventlon, what I clann as new and desire to secure by Letters Patent, is:

1. In a door fastener the combination with a door, a casing therefor, and latch plate having a slot therein, of a plate having a plurality of, transversely extending slots therethrough, a tongue on said plate adapted to enter the slot in the latch plate, a locking bolt, a bracket carried by the locking bolt having lateral extensions adapted to engage the slots in the second plate, and a nut between the arms of said bracket for causing said bolt to travel lengthwise when rotated.

2. A door fastener of the class described,

comprising a plate having a plurality of elongated transversely extending slots therethrough, a tongue integral with said plate, a locking bolt, a bracket carried by the locking bolt, said bracket having par- .alleling arms, and said arms having lateral means between the arms of the bracket for causing said bolt to travel lengthwise when rotated. I

4. The combination with a door structure and casin associated therewith, and a latch plate havni'g a slot therethrough, of a locking plate adapted to enter between the edge of the door and the casing, a tongue on the locking plate adapted to enter the slot in the latch plate, a substantially U-shaped bracket, means for adj ustably connecting the bracket with the locking plate, a lockingbolt extending through said'bracket, and a nut between 'the arms of thebracket for causing the. bolt to move lengthwise when rotated.

5. A door'fastener comprising a. locking plate having a plurality of slots therethrough, a tongue struck from parts of said plate and extended at right angles thereto,

said tongue having an inclined edge, a looking bolt, a bracket associated with said locking bolt, a nut associated with the'bracket for causing the bolt to move lengthwise when rotated, and means, on said bracket adapted to engage the slots inthe locking plate from one side of the plate when the bolt is usedfor locking purposes, and adapted to enter the slots from the opposite side of said'plate and position the end of the bolt for causing the same to engage said tongue when rotated in one direction.

In witness whereof, I have hereunto set my hand and seal at Louisville, Kentucky, this 10th day of March, A. D. nineteen hundred and twenty-one. A r

FRANK T. ROBINSON. [1,. s.]

WVitnesses: v

C. T. HowLAND,

P, J. POTTER. i 15 

